Before Christians
start thumping the Bible to justify hate for homosexuality,
keep in mind that the Bible also condemns those who masturbate.
Unless you are masturbation free, based on the standards
of the Bible, you are no better off than the homosexuals
and other "sinners" described in the Bible.

So if you masturbate then biblically you're on the same
moral level as homosexuals or non-believers and have no
right to cast stones at others.

Not Just "the Bible"; rather, God, speaking through His
Prophets in the Bible, AND Jesus, speaking to all, in the
Bible. God, and His Son - the only Being who could state,
with Authority, what God believed - sharing an identical
condemnation of masturbation and lust.

Death for Spilling Seed

Genesis
38:9-10
"And Onan knew that the seed should not be his; and it came
to pass, when he went in unto his brother’s wife, that he
spilled it on the ground, lest that he should give seed
to his brother. And the thing which he did displeased the
LORD: wherefore he slew him also."

Leviticus 15:16-17
"And if any man’s seed of copulation go out from him,
then he shall wash all his flesh in water, and be unclean
until the even. And every garment, and every skin, whereon
is the seed of copulation, shall be washed with water, and
be unclean until the even."

Catholic Church Condemns Masturbation

The Catechism of the Catholic Church (1994 pp. 564-566)
lists six "Offenses against chastity": lust, masturbation,
fornication, pornography, prostitution, and rape.

"2352 By masturbation is to be understood the deliberate
stimulation of the genital organs in order to derive sexual
pleasure. "Both the Magisterium of the Church, in the
course of a constant tradition, and the moral sense of the
faithful have been in no doubt and have firmly maintained
that masturbation is an intrinsically and gravely disordered
action."[137] "The deliberate use of the sexual faculty,
for whatever reason, outside of marriage is essentially
contrary to its purpose." For here sexual pleasure is sought
outside of "the sexual relationship which is demanded by
the moral order and in which the total meaning of mutual
self-giving and human procreation in the context of true
love is achieved."[138]

To form an equitable judgment about the subjects' moral
responsibility and to guide pastoral action, one must take
into account the affective immaturity, force of acquired
habit, conditions of anxiety, or other psychological or
social factors that lessen or even extenuate moral culpability.- Catechism of the Catholic Church, para. 2352

Mormon Church Leaders, Whom some Christians Praise as
"Ahead of the Curve" on Homosexuality, Have Also Condemned
Masturbation

“Masturbation is not approved of the Lord nor of his
church, regardless of what may be said by others whose ‘norms’
are lower.”
- Current Aaronic Priesthood Manual, Lesson 25: Personal
Purity through Self-discipline, page 91

"Prophets anciently and today condemn masturbation.
It induces feelings of guilt and shame. It is detrimental
to spirituality. It indicates slavery to the flesh, not
that mastery of it and the growth toward godhood which is
the object of our mortal life. No young man should be
called on a mission who is not free from this practice.”
- Current Family Home Evening Resource Manual, Quoting
Prophet Spencer W. Kimball, "Teaching about Procreation
and Chastity, page 253

Jesus and the Apostles Condemn Lusting After Women (which
includes masturbation)

Matthew 5:27-29
"Ye have heard that it was said by them of old time, Thou
shalt not commit adultery: But I say unto you, That whosoever
looketh on a woman to lust after her hath committed adultery
with her already in his heart. And if thy right eye
offend thee, pluck it out, and cast it from thee: for it
is profitable for thee that one of thy members should perish,
and not that thy whole body should be cast into hell."

Proverbs 6:25
"Lust not after her beauty in thine heart; neither
let her take thee with her eyelids."

2 Corinthians 7:1: "Let us cleanse ourselves of all filthiness
of the flesh."

Ephesians 5:3
"But fornication, and all uncleanness, or covetousness,
let it not be once named among you, as becometh saints;"

1 Theselonians 4:2-8
"For ye know what commandments we gave you by the Lord Jesus.
For this is the will of God, even your sanctification, that
ye should abstain from fornication: That every one of you
should know how to possess his vessel in sanctification
and honour; Not in the lust of concupiscence, even
as the Gentiles which know not God:

2 Timothy 21-22
"If a man therefore purge himself from these, he shall be
a a vessel unto honour, sanctified, and meet for the master’s
use, and prepared unto every good work. Flee also youthful
lusts..."

1 Peter 2:11
"Dearly beloved, I beseech you as strangers and pilgrims,
abstain from fleshly lusts, which war against the
soul;"

1 John 2:16-17
"For all that is in the world, the lust of the flesh,
and the lust of the eyes, and the pride of life, is
not of the Father, but is of the world. And the world
passeth away, and the lust thereof: but he that doeth
the will of God abideth for ever."

1 Peter 4:1-2
"FORASMUCH then as Christ hath suffered for us in the flesh,
arm yourselves likewise with the same mind: for he that
hath suffered in the flesh hath ceased from sin; That he
no longer should live the rest of his time in the flesh
to the lusts of men, but to the will of God."

1 Corinthians 6:9
"Know ye not that the unrighteous shall not inherit the
kingdom of God? Be not deceived: neither fornicators, nor
idolaters, nor adulterers, nor effeminate, nor
abusers of themselves with mankind"

Galatians 5:16-17
16 This I say then, Walk in the Spirit, and ye shall not
fulfil the lust of the flesh. For the flesh lusteth against
the Spirit, and the Spirit against the flesh: and these
are contrary the one to the other..."

Colossians 3:5-6
"Mortify therefore your members which are upon the earth;
fornication, uncleanness, inordinate affection, evil
concupiscence, and covetousness, which is idolatry: For
which things’ sake the wrath of God cometh on the children
of disobedience"

Self-proclaimed Christian demagogues who masturbate or lust
after women are no better off biblically than others they
condemn using the Bible.